Warning to your server!

Two people have recently joined our server and asked us if we wanted to download a plugin that protects us from attacks (I don't wan to say their names because its basically blacklisting) if I'm allowed to post their names please comment or send me a pm. The first one asked us if we wanted to download a plugin that protects us from spawn shadow5099 said no. And then 1-30 minutes later another person joins and threatens to attack the server, I log off because i had to go. shadow5099 told me this, He said he didn't believe him that he was going to attack and then the guy logged off and shadow5099 forgot all about it so then shadow5099 continued playing. Someone said the server kicked the and said it crashed we don' really know about that part. We couldn't get on for a couple of hours so i just gave up and i didn't try to get back on the next time I joined the server was the next morning-9:30 AM GMT. When I logged in shadow said that half of spawn was missing and that someone's house was gone. shadow said it looked like someone had used world edit but we knew who it was, the two people who asked us for the plugin and who threatened to join the server. By the time i had logged in shadow had rebuilt spawn. I banned the two people and hopefully this was all over.... but who knows? Me and shadow did /seen on both of them on the person who threatened to attack us it said that he has been offline for 40 years I was like wtf? and we knew that he was he hacker but the guy who told us to download it was not offline for 40 years but offline for about 8-24 hours. They deleted all of the warps that we had. So if anyone threatens to attack your server or offers you a plugin send them a
link to this post and ban them or shut down the server for about 5/6 hours because we didn't know how long this would go on for. I hope you liked this post and you need to spread this post/about these hackers they don't do anything good for your server. Updates will be coming soon to tell you more info on this.

UPDATE!

We have been hacked again and we don't know what time it was. I think the people are tacking over our server :( be warned!